On Thu, 2 Apr 2009 11:53:47 +0200
Fabian Groffen <grobian@g.o> wrote:
> While the first variable (EPREFIX) can be set using an eclass, the
> latter two need to be set by the package manager.  In particular ED,
> because the value of D might not be known.  EROOT and ED are
> convenience variables.  Making them available already now, even
> though initialised as ROOT and D respectively, allows Prefix enabled
> ebuilds to be shared between gentoo-x86 and Prefix trees without
> modifications.

Why not just do it properly? Come up with a full list of requirements,
propose a full solution, open it up for feedback and adapt it as
necessary. Then just move the whole thing into a future EAPI.

My worry is we'll end up with more legacy mess that package managers
will have to carry on supporting indefinitely, but that won't be used
by anything once prefix goes through the necessary changes to make it
mainstream.

-- 
Ciaran McCreesh